Indexers unavailable due to failures for more than 6 hours: dmhy (Prowlarr)

Sonarr version (exact version): 4.0.4.1491 Run in docker

Here is the error log. On Prowlarr side, there is no error reported. Also, Prowlarr has multiple indexers, only this one has such a issue.

2024-05-03 04:29:03.5|Warn|HttpClient|HTTP Error - Res: HTTP/1.1 [GET] http://192.168.0.241:9696/5/api?t=tvsearch&cat=5000,5070&extended=1&apikey=(removed)&offset=0&limit=100: 500.InternalServerError (4043 bytes)
{
  "message": "Invalid URI: The Uri string is too long.",
  "description": "System.UriFormatException: Invalid URI: The Uri string is too long.\n   at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind, UriCreationOptions\u0026 creationOptions)\n   at System.Uri..ctor(String uriString)\n   at NzbDrone.Core.Download.DownloadMappingService.ConvertToProxyLink(Uri link, String serverUrl, Int32 indexerId, String file) in ./Prowlarr.Core/Download/DownloadMappingService.cs:line 40\n   at NzbDrone.Api.V1.Indexers.NewznabController.GetNewznabResponse(Int32 id, NewznabRequest request) in ./Prowlarr.Api.V1/Indexers/NewznabController.cs:line 197\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.\u003CInvokeActionMethodAsync\u003Eg__Awaited|12_0(ControllerActionInvoker invoker, ValueTask\u00601 actionResultValueTask)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.\u003CInvokeNextActionFilterAsync\u003Eg__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State\u0026 next, Scope\u0026 scope, Object\u0026 state, Boolean\u0026 isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.\u003CInvokeInnerFilterAsync\u003Eg__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.\u003CInvokeFilterPipelineAsync\u003Eg__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.\u003CInvokeAsync\u003Eg__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)\n   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.\u003CInvokeAsync\u003Eg__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)\n   at Microsoft.AspNetCore.Routing.EndpointMiddleware.\u003CInvoke\u003Eg__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)\n   at Prowlarr.Http.Middleware.BufferingMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/BufferingMiddleware.cs:line 28\n   at Prowlarr.Http.Middleware.IfModifiedMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/IfModifiedMiddleware.cs:line 41\n   at Prowlarr.Http.Middleware.CacheHeaderMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/CacheHeaderMiddleware.cs:line 33\n   at Prowlarr.Http.Middleware.StartingUpMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/StartingUpMiddleware.cs:line 38\n   at Prowlarr.Http.Middleware.UrlBaseMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/UrlBaseMiddleware.cs:line 27\n   at Prowlarr.Http.Middleware.VersionMiddleware.InvokeAsync(HttpContext context) in ./Prowlarr.Http/Middleware/VersionMiddleware.cs:line 29\n   at Microsoft.AspNetCore.ResponseCompression.ResponseCompressionMiddleware.InvokeCore(HttpContext context)\n   at Microsoft.AspNetCore.Authorization.Policy.AuthorizationMiddlewareResultHandler.HandleAsync(RequestDelegate next, HttpContext context, AuthorizationPolicy policy, PolicyAuthorizationResult authorizeResult)\n   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)\n   at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)\n   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.\u003CInvoke\u003Eg__Awaited|6_0(ExceptionHandlerMiddleware middleware, HttpContext context, Task task)"
}
2024-05-03 04:29:03.7|Warn|Torznab|Unable to connect to dmhy (Prowlarr) at [http://192.168.0.241:9696/5/api?t=tvsearch&cat=5000,5070&extended=1&apikey=(removed)&offset=0&limit=100]. Indexer's server is unavailable. Try again later. HTTP request failed: [500:InternalServerError] [GET] at [http://192.168.0.241:9696/5/api?t=tvsearch&cat=5000,5070&extended=1&apikey=(removed)&offset=0&limit=100]